Observation information
- date-obs: 2026-06-27
- time-obs: 14:15:17.263000000
- date-end: 2026-06-27
- time-end: 16:18:14.243100000
- obs_id: A14_042T02_9000006586
- exposure: 1679.62170315
- sourceid: NGC4038
- observer: pshalima
- ra_pnt: 180.4708
- dec_pnt: -18.86759
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A14_042T02_9000006586_58152cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58152cztM0_level2_quad_clean.evt
|
| Size (bytes) | 694,152,000 | 83,160,000 |
| Size | 662.0 MB
| 79.3 MB
|
| Events in quadrant A | 3,157,375 | 663,502 |
| Events in quadrant B | 14,683,341 | 172,848 |
| Events in quadrant C | 3,679,680 | 623,586 |
| Events in quadrant D | 3,652,503 | 589,857 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 7 | 0 |
| B | 0 | 7 | 0 |
| C | 0 | 7 | 0 |
| D | 0 | 7 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 136 | 0 |
| B | 0 | 136 | 0 |
| C | 0 | 136 | 0 |
| D | 0 | 136 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14082 | 1 |
| B | 0 | 48238 | 2 |
| C | 0 | 15851 | 1 |
| D | 0 | 15548 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6717 | 48 | 0.714605% |
| B | 6717 | 5168 | 76.939110% |
| C | 6717 | 103 | 1.533423% |
| D | 6717 | 97 | 1.444097% |
Noise dominated fraction
Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.
| Quadrant |
# 1 sec bins |
Bins with >0 counts |
Bins with >2000 counts |
High rate bins dominated by noise |
Noise dominated (total time) |
Noise dominated (detector-on time) |
Marked lightcurve |
| A | 7377 | 6718 | 0 | 0 | 0.00% | 0.00% |  |
| B | 7376 | 6716 | 4867 | 4867 | 65.98% | 72.47% |  |
| C | 7377 | 6718 | 45 | 45 | 0.61% | 0.67% |  |
| D | 7377 | 6718 | 94 | 94 | 1.27% | 1.40% |  |
Top noisy pixels
Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1
| Pixel properties |
Quadrant properties |
| Quadrant |
DetID |
PixID |
Counts |
Sigma |
Mean |
Median |
Sigma |
| A | 3 | 14 | 159554 | 840.55 | 757 | 739 | 188.9 |
| A | 10 | 251 | 35628 | 184.65 | 757 | 739 | 188.9 |
| A | 4 | 3 | 13091 | 65.37 | 757 | 739 | 188.9 |
| B | 10 | 128 | 12611881 | 164348.79 | 348 | 335 | 76.7 |
| B | 2 | 249 | 459796 | 5987.52 | 348 | 335 | 76.7 |
| B | 10 | 247 | 43669 | 564.71 | 348 | 335 | 76.7 |
| C | 12 | 252 | 420774 | 2091.01 | 724 | 716 | 200.9 |
| C | 9 | 38 | 225719 | 1120.04 | 724 | 716 | 200.9 |
| C | 12 | 254 | 113734 | 562.59 | 724 | 716 | 200.9 |
| D | 12 | 110 | 235914 | 1144.22 | 726 | 697 | 205.6 |
| D | 2 | 249 | 147603 | 714.63 | 726 | 697 | 205.6 |
| D | 12 | 128 | 78528 | 378.61 | 726 | 697 | 205.6 |
Detector plane histogram (DPH)
Histogram calculated using DETX and DETY for each event in the final _common_clean file
| Quadrant A |
 |
 |
Quadrant B |
| Quadrant D |
 |
 |
Quadrant C |
Count rate plots and images
| Plot type |
Count rate plots |
Images |
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data. |
 |
 |
Quadrant-wise count rates
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins |
 |
 |
Housekeeping plots
| Parameter |
Plot |
| CZT HV Monitor |  |
| D_VDD |  |
| Temperature 1 |  |
| Veto HV Monitor |  |
| Veto LLD |  |
| Alpha Counter |  |
| _CPM_Rate |  |
| CZT Counter |  |
| +2.5 Volts monitor |  |
| +5 Volts monitor |  |
| _ROLL_ROT |  |
| _Roll_DEC |  |
| _Roll_RA |  |
| Veto Counter |  |